Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753277Ab2EBMq1 (ORCPT ); Wed, 2 May 2012 08:46:27 -0400 Received: from mail-yx0-f174.google.com ([209.85.213.174]:51600 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750795Ab2EBMqY (ORCPT ); Wed, 2 May 2012 08:46:24 -0400 From: Magnus Damm To: linux-serial@vger.kernel.org Cc: arnd@arndb.de, swarren@wwwdotorg.org, lethal@linux-sh.org, gregkh@linuxfoundation.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, rjw@sisk.pl, paul.gortmaker@windriver.com, horms@verge.net.au, olof@lixom.net, Magnus Damm , dan.j.williams@intel.com, alan@linux.intel.com Date: Wed, 02 May 2012 21:47:09 +0900 Message-Id: <20120502124709.30480.98463.sendpatchset@w520> In-Reply-To: <20120502124642.30480.41373.sendpatchset@w520> References: <20120502124642.30480.41373.sendpatchset@w520> Subject: [PATCH 03/06] serial8250: Use dl_read()/dl_write() on RM9K Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3614 Lines: 131 From: Magnus Damm Convert the 8250 RM9K support code to make use of the new dl_read()/dl_write() callbacks. Signed-off-by: Magnus Damm --- drivers/tty/serial/8250/8250.c | 62 ++++++++++++++++++---------------------- 1 file changed, 29 insertions(+), 33 deletions(-) --- 0006/drivers/tty/serial/8250/8250.c +++ work/drivers/tty/serial/8250/8250.c 2012-05-01 22:51:42.000000000 +0900 @@ -297,25 +297,6 @@ static void default_dl_write(struct uart serial_out(up, UART_DLM, value >> 8 & 0xff); } -#if defined(CONFIG_SERIAL_8250_RM9K) -static int _serial_dl_read(struct uart_8250_port *up) -{ - return (up->port.iotype == UPIO_RM9000) ? - (((__raw_readl(up->port.membase + 0x10) << 8) | - (__raw_readl(up->port.membase + 0x08) & 0xff)) & 0xffff) : - default_dl_read(up); -} - -static void _serial_dl_write(struct uart_8250_port *up, int value) -{ - if (up->port.iotype == UPIO_RM9000) { - __raw_writel(value, up->port.membase + 0x08); - __raw_writel(value >> 8, up->port.membase + 0x10); - } else { - default_dl_write(up, value); - } -} -#else static int _serial_dl_read(struct uart_8250_port *up) { return default_dl_read(up); @@ -325,7 +306,6 @@ static void _serial_dl_write(struct uart { default_dl_write(up, value); } -#endif #ifdef CONFIG_MIPS_ALCHEMY @@ -373,7 +353,7 @@ static void au_serial_dl_write(struct ua #endif -#if defined(CONFIG_SERIAL_8250_RM9K) +#ifdef CONFIG_SERIAL_8250_RM9K static const u8 regmap_in[8] = { @@ -397,28 +377,36 @@ static const u8 [UART_SCR] = 0x2c }; -static inline int map_8250_in_reg(struct uart_port *p, int offset) +static unsigned int rm9k_serial_in(struct uart_port *p, int offset) +{ + offset = regmap_in[offset] << p->regshift; + return readl(p->membase + offset); +} + +static void rm9k_serial_out(struct uart_port *p, int offset, int value) { - if (p->iotype != UPIO_RM9000) - return offset; - return regmap_in[offset]; + offset = regmap_out[offset] << p->regshift; + writel(value, p->membase + offset); +} + +static int rm9k_serial_dl_read(struct uart_8250_port *up) +{ + return ((__raw_readl(up->port.membase + 0x10) << 8) | + (__raw_readl(up->port.membase + 0x08) & 0xff)) & 0xffff; } -static inline int map_8250_out_reg(struct uart_port *p, int offset) +static void rm9k_serial_dl_write(struct uart_8250_port *up, int value) { - if (p->iotype != UPIO_RM9000) - return offset; - return regmap_out[offset]; + __raw_writel(value, up->port.membase + 0x08); + __raw_writel(value >> 8, up->port.membase + 0x10); } -#else +#endif /* sane hardware needs no mapping */ #define map_8250_in_reg(up, offset) (offset) #define map_8250_out_reg(up, offset) (offset) -#endif - static unsigned int hub6_serial_in(struct uart_port *p, int offset) { offset = map_8250_in_reg(p, offset) << p->regshift; @@ -490,12 +478,20 @@ static void set_io_from_upio(struct uart p->serial_out = mem_serial_out; break; - case UPIO_RM9000: case UPIO_MEM32: p->serial_in = mem32_serial_in; p->serial_out = mem32_serial_out; break; +#ifdef CONFIG_SERIAL_8250_RM9K + case UPIO_RM9000: + p->serial_in = rm9k_serial_in; + p->serial_out = rm9k_serial_out; + up->dl_read = rm9k_serial_dl_read; + up->dl_write = rm9k_serial_dl_write; + break; +#endif + #ifdef CONFIG_MIPS_ALCHEMY case UPIO_AU: p->serial_in = au_serial_in; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/